391164 has 24 divisors (see below), whose sum is σ = 938448. Its totient is φ = 126720.

The previous prime is 391163. The next prime is 391177. The reversal of 391164 is 461193.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4 + ... + 884.

It is an arithmetic number, because the mean of its divisors is an integer number (39102).

2³⁹¹¹⁶⁴ is an apocalyptic number.

It is an amenable number.

391164 is an abundant number, since it is smaller than the sum of its proper divisors (547284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

391164 is a wasteful number, since it uses less digits than its factorization.

391164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 923 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 391164 is about 625.4310513558. The cubic root of 391164 is about 73.1340503080.

It can be divided in two parts, 391 and 164, that added together give a palindrome (555).

The spelling of 391164 in words is "three hundred ninety-one thousand, one hundred sixty-four".